<search position="after"><![CDATA[// Previewing? Go back to start.if (isset($_REQUEST['preview'])){if (checkSession('post', '', false) != ''){loadLanguage('Errors');$context['post_errors']['message'][] = $txt['error_session_timeout'];unset ($_POST['preview'], $_REQUEST['xml']); // just in case}return Post();}]]></search>Moreover around few years Youtube videos does not embed, by simply copy-paste of youtube url. I have tried to revise the source and replaced all http to https, but looks, like problem is deeper. In Subs-Aeva-Sites.php I have updated ytb: